Hi, I'm encountering a problem: 1. almost all threads are in "P" status, and occasionally there is 1 or 2 in "S" or "R" status, 2. and there is no slow query on MySQL side, because I can't catch any process with command "show full processlist", 3. while tomcat connection rate is merely less than 30req/s, 4. and tomcat CAN response correct result page in acceptable time(1 second) System architecture: Tomcat*3 + Memcached*2 + MySQL-Proxy*2 + MySQL*2, Linux-Redhat Software information: apache-tomcat-7.0.6, MySQL--5.5.11-1.rhel5.x86_64, jdk-6u23-linux-x64-rpm Configuration: tomcat server.xml:
1. <Connector port="8080" protocol="HTTP/1.1" 2. connectionTimeout="20000" 3. redirectPort="8443" /> which provides default maximum number of threads is 200 Screenshot: please refer to attachment. Question: 1. is this situation(full of "P" status) problematic? 2. how to explain the situation?(waiting for Http request body? sounds unreasonable!)
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